Fix Intellij aspect integration tests setup

Adds a dependency on the minimal `@rules_java` version that has the required top level symbols.

Also drops testing against Bazel 4 (it is no longer supported, as of Jan 2024, see: https://bazel.build/release#support-matrix)

Should turn CI green and unblock the release.

Tested: https://buildkite.com/bazel/intellij-plugin-aspect-google/builds/9062
PiperOrigin-RevId: 627296165

aspect/testing/tests/src/com/google/idea/blaze/aspect/integration/BUILD

@@ -20,7 +20,6 @@ java_binary(
 bazel_integration_tests(
     name = "bazel_invocation_integration_tests",
     bazel_versions = [
-        "4.0.0",
         "6.0.0",
     ],
     # set tags = [] because otherwise bazel_integration_tests sets

aspect/testing/tests/src/com/google/idea/blaze/aspect/integration/testdata/WORKSPACE

@@ -1 +1,8 @@
 workspace(name = "testdata")
+
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+http_archive(
+    name = "rules_java",
+    url = "https://github.com/bazelbuild/rules_java/releases/download/5.3.5/rules_java-5.3.5.tar.gz",
+    sha256 = "c73336802d0b4882e40770666ad055212df4ea62cfa6edf9cb0f9d29828a0934",
+)